Smart cards are used as ATM cards, credit cards, SIM cards, signature cards, pay TV cards and citizen cards. The security of these cards is of crucial importance. Power analysis attacks are one of the most effective attacks against cryptographic tokens like smart cards; in such an attack, the power consumption of a token is measured in order to determine the secret key that is used by the token. Power Analysis Attacks: Revealing the Secrets of Smart Cards provides a unified overview and comparison of power analysis attacks. Illustrative examples and case studies are used throughout the monograph to explain the attacks and compare the effectiveness of the different countermeasures. Designed for researchers and smart card developers in industry, this comprehensive volume is also suitable for advanced-level students in computer science.